Comparison of Lu0.7Y0.3AP:Ce and Bi4Ge3O12 Scintillators in Gamma Ray Spectrometry

Akapong Phunpueok; WEERAPONG CHEWPRADITKUL; Pichet Limsuwan; Bing Kun Yu; Chalerm Wanarak

doi:10.4028/www.scientific.net/AMR.284-286.2008

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 284-286Comparison of Lu0.7Y0.3AP:Ce and Bi4Ge3O12...

Comparison of Lu_0.7Y_0.3AP:Ce and Bi₄Ge₃O₁₂ Scintillators in Gamma Ray Spectrometry

Abstract:

The scintillation response of Lu_0.7Y_0.3AP:Ce and Bi₄Ge₃O₁₂ scintillation crystals have been compared using photomultiplier tube readout for photon energies ranging from 22.1 to 1274.5 keV. Lu_0.7Y_0.3AP:Ce showed a light yield non-proportionality of about 20% upon lowering energy from 1,274.5 to 22.1 keV, which is better than that of about 39% obtained for Bi₄Ge₃O₁₂. Lu_0.7Y_0.3AP:Ce showed the light yield of 13,400 ph/MeV and energy resolution of about 8 % for 662 keV gamma rays from a ¹³⁷Cs source. The photofraction of Bi₄Ge₃O₁₂ is better than that of Lu_0.7Y_0.3AP:Ce. The intrinsic resolution of the crystals versus energy of gamma rays has been determined after correcting the measured energy resolution for photomultiplier tube statistics.

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Advanced Materials Research (Volumes 284-286)

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2008-2013

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https://doi.org/10.4028/www.scientific.net/AMR.284-286.2008

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July 2011

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Akapong Phunpueok, WEERAPONG CHEWPRADITKUL, Pichet Limsuwan, Bing Kun Yu, Chalerm Wanarak

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BGO, Energy Resolution, Lu_0.7Y_0.3Ap:Ce, Non-Proportionality of the Light Yield, Scintillation

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